Criterion Properties (Null Value Criterion Type)

Aplica-se a: System Center Configuration Manager 2007, System Center Configuration Manager 2007 R2, System Center Configuration Manager 2007 R3, System Center Configuration Manager 2007 SP1, System Center Configuration Manager 2007 SP2

Use this Microsoft System Center Configuration Manager 2007 dialog box to compare a query attribute with a null value.

Any data type can have a null value, and null values are unknown. Therefore, they are not evaluated as True or False. Dealing with null values requires using three-valued logic (True, False, and Unknown). For example, the expression USER = "ChrisJones" is evaluated as either True or False, unless USER is null, in which case the expression is evaluated as Unknown. For more information, see the SQL Server documentation.

Where

The attribute class, optional alias, and query attribute for the query result. Click Select to specify the query attribute and attribute class.

Select

Specifies a query attribute and attribute class. Click to open the Select Attribute dialog box.

Operator

The relational operator for this query criterion.

Consulte Também

For additional information, see Configuration Manager 2007 Information and Support.
To contact the documentation team, email SMSdocs@microsoft.com.

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